We Keep Coding

Oracle Table or view doesn't exist

i'm trying to deplay a java application to weblogic, it uses oracle as database, this is in the log of the application
but the thing is, it does exist, and it has data
so, any ideas of what's going on here? (sorry, i can't show some names of tables, schemas, or classes)
also, the jndi is configured properly, the test query works fine
thanks

Grails - Spring Security not working with Mysql 8

I have a application where I used these technologies:
Grails 3.3.0
JDK 1.8
Spring 4+
Mysql 8
GORM 6.1.6.RELEASE
org.grails.plugins:spring-security-core:3.2.0
Hibernate 5+
Problem is when I am trying to connect the application with Mysql 8(with 5.6+ it is working fine), I am not able to get the information related to user from Grails-Spring-Security plugin.
The application is running even connect to DB but wont be able to authenticate or fetch the information of the User like findByUsername where username is property in my user domain class.
I have User domain class defined in application.properties file.
grails.plugin.springsecurity.userLookup.userDomainClassName = 'com.aaa.User'
At some point I found this error but not sure whether it is related to this or not.
java.lang.IllegalStateException:
Either class [com.aaa.User] is not a domain class or GORM has not been initialized correctly or has already been shutdown.
Ensure GORM is loaded and configured correctly before calling any methods on a GORM entity.
Want to understand why it wont be able to fetch the information from DB. I have tried lot of things like change the GORM version to 6.1.7 and grails spring-secuirty-core plugin version but not able to get anything.
Any help would be appreciated.
Thanks,
Atul

We are able to solve the issue. It happens when grails-hibernate plugin look for the property(in my case its username as I am calling API findByUsername) which is present in the static api or not. If it is not there it throws the exception.
The thing worked for me is, I have to put the property in static mapping of User domain class:
static mapping = {
table 'userTable'
id column: 'id'
password column: 'userpassword'
username column: 'username'
}
I am not sure why it is happening, when I run the application with Mysql5.6+ its working.(The driver is according to it) but when go with Mysql8, it look for the property in static mapping.
One more point I would like to mention to fix the issue is, make sure you have tablename, columnname same as defined in DB. Case sensitivity is what expected.
As I mentioned the case sensitivity, if you are using linux with Mysql8, the lower_case_table_names=0, this check with the following as per Mysql official documentation:
Table and database names are stored on disk using the lettercase
specified in the CREATE TABLE or CREATE DATABASE statement. Name
comparisons are case sensitive. You should not set this variable to 0
if you are running MySQL on a system that has case-insensitive file
names (such as Windows or macOS). If you force this variable to 0 with
--lower-case-table-names=0 on a case-insensitive file system and access MyISAM tablenames using different lettercases, index corruption
may result.
So if the table name is static is in camel or upper case and in db it is lower case it wont match. and the error occurred.
Hope this helps to someone.

MySQL only shows some data that is inserted by Hibernate

I have a Java application that loads data from a very large text file into MySQL via Hibernate. So far, the application seems to work OK - the data gets loaded.
Then I wanted to monitor the progress of the application while it was inserting data, so I wrote a small command-line utility that basically queries select count(*) from my_table;.
The first time this query is run (from either the CLI or MySQL Workbench), I get the correct number of records, as expected. All subsequent executions of this query return the exact same number! Even though the data-loading application is still running!
If I stop and start the MySQL process, querying for the number of records shows the correct number, as the data-loading application would report it.
I've never seen anything like this before. It looks like there is some strange MySQL caching issue going on here, and I'm concerned it may cause problems for other non-Hibernate applications that may want to access this database.
Does anyone know how to tweak MySQL (or possibly Hibernate) so that MySQL always shows what's being added to the database?
Technical details:
MySQL: 5.7.26, in a docker container, using InnoDB storage
Hibernate version: 5.4.2.Final
Spring version: 5.1.7.RELEASE

Calling FLUSH TABLES seems to resolve this, in the sense that after I flush the tables, I can see how many records have been added by the application.

Spring Boot -- not running data.sql on Start

I'm trying to run a simple H2 Spring project. I've used starter.spring.io to initialize a project with the web, JDBC, JPA, andH2` dependencies. I'm following along with in28minutes Spring Mastercourse.
All I'm trying to do is initialize one table on startup. I do the following in my data.sql:
CREATE TABLE person
(
id integer not null,
name varchar(255) not null,
location varchar(255),
birth_date timestamp,
primary key(id)
);
My application.properties looks like this:
spring.h2.console.enabled=true
I haven't touched a single other file in the entire project. Just loaded a project, added those lines, and tried running it. For some reason, my table isn't being created. I've gone through the steps in the tutorial probably 15 times by this point and can't find what I'm doing wrong, any help would be greatly appreciated.
Edit: My JDBC URL is correct, as well as my driver class. I've checked those each time I tried re-running the steps

With your exact dependency setup, and with your schema, I can see the data in the web console.
The predefined Generic H2 (embedded) settings should provide the right values, but you should input the following :
Driver Class : org.h2.Driver
JDBC URL : jdbc:h2:mem:testdb
User Name : sa
Password : <empty>
on the web console login page, as those are the defaults for an embedded h2 database.
If you don't see any issue in the startup log, this is most likely it.
Take note that H2 will not error out if you try to connect to a non-existent database.
e.g. : jdbc:h2:mem:db, jdbc:h2:mem:foobar will not produce any errors and connect to empty databases.

Hibernate database name change gives MySQLSyntaxErrorException: Table doesn't exist

I used to have a database called database and everything was working well using hibernate and its models.
I removed <property name="hibernate.hbm2ddl.auto"> to avoid update or create as it's a production server, we want to do it manually.
We recently switched to database2 and so we switched the hibernate configuration file and all the hibernate XML models.
`<class name="com.api.models.database.MmApplications" table="mm_applications" catalog="database2">`
but it keeps looking for database event if we migrated the database, the models and the connexion.
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'database.mm_applications' doesn't exist
Does someone can help me ?
UPDATE ----
Hibernate is connecting to the right database (database2), but there is a prefix as a prefix database. making the queries hitting the database instead of database2, and when I try to force the default_schema my queries become :
`... from database.database2.mm_applications ....`
Any idea?

My database is specified in the hibernate.connection.url property. Have you changed that also ? An example would be: jdbc:mysql://localhost/mydatabase
Also, instead of removing hibernate.hbm2ddl.auto then perhaps you should set its value to validate. That way hibernate will ensure that the datamodel matches the database schema.

I found the problem, It was an other application deployed on the same tomcat server using hibernate as well with another database (database) making a conflict with the new application ...
There is still something weird, by connecting to any database, hibernate will use the specified catalog in the hibernate models and so constructing the request using the catalog.table_name
Hope this help someone someday.